8-oxo-dGTP diphosphatase (, MutT, 7,8-dihydro-8-oxoguanine triphosphatase, 8-oxo-dGTPase, 7,8-dihydro-8-oxo-dGTP pyrophosphohydrolase) is an enzyme with systematic name 8-oxo-dGTP diphosphohydrolase. This enzyme catalyses the following chemical reaction:
This enzyme requires Mg<sup>2+</sup>.